Home / 1,615.49-2,423.38-519.58

Finding the Fourth Proportional to 1,615.49, 2,423.38 and 519.58

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Solution

The fourth proportional to 1,615.49, 2,423.38 and 519.58 is: 779.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.49 : 2,423.38 = 519.58 : x
  2. Step 2: Convert to fraction form
    1,615.49/2,423.38 = 519.58/x
  3. Step 3: Cross multiply
    1,615.49x = 2,423.38 × 519.58
  4. Step 4: Simplify right side
    1,615.49x = 1,259,139.78
  5. Step 5: Solve for x
    x = 1,259,139.78/1,615.49
  6. Step 6: Final answer
    x = 779.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.